Getting "from" right in qmail-queue/-inject

For some reason the "from" name or whatever in the logs is not what
I'm expecting it to be. I think that's the basis of the problem. The
symptom is that when I send a message using qmail-queue or
qmail-inject, there aren't any problems if the recipient address is
right. If it is wrong, the DSN does not make it to the address in the
From: header. An arbitrary address appears as the "from" in the logs,
and not the "From:" in the e-mail. See below. I thought explictly
putting a Return-Path: might fix it, but it didn't. I thought it might
have something to do w/the fact that my server here is on a host using
NAT, but the same problem happens on another server.

I've read the man pages for queue and inject, and I don't see what
I could be missing. The problem is the same for both of them. The
systems running qmail are RH9.

Here's a list of relevant rpms again:
qmail-toaster-debuginfo-1.03-1.0.9
qmail-toaster-doc-1.03-1.0.9
qmailadmin-toaster-1.0.6-1.0.6
qmail-toaster-1.03-1.0.9
qmailmrtg-toaster-debuginfo-3.4-1.0.7
qmailmrtg-toaster-3.4-1.0.7
qmail-pop3d-toaster-1.03-1.0.9
qmailadmin-toaster-debuginfo-1.0.6-1.0.6

And here's what I had in /var/log/qmail/send/current:

@400000004043f5a30aefe764 delivery 51: success: did_0+1+0/qp_22942/
@400000004043f5a30aefeb4c status: local 1/10 remote 0/255
@400000004043f5a30aefeb4c end msg 2117730
@400000004043f5a30b0649dc delivery 52: failure:
Sorry,_no_mailbox_here_by_that_name._(#5.1.1)/
@400000004043f5a30b0651ac status: local 0/10 remote 0/255
@400000004043f5a30b065594 triple bounce: discarding bounce/2117732
@400000004043f5a30b065594 end msg 2117732
@400000004043f6cd2075612c new msg 2117730
@400000004043f6cd20756ce4 info msg 2117730: bytes 431 from
<jo@desktop.desktop> qp 23168 uid 500
@400000004043f6cd212f625c starting delivery 53: msg 2117730 to remote
garbagename691@hotmail.com
@400000004043f6cd212f6e14 status: local 0/10 remote 1/255
@400000004043f70a30fc4a74 delivery 53: failure:
65.54.167.230_does_not_like_recipient./Remote_host_said:_550_Requested_action_not_taken:_ mailbox_unavailable/Giving_up_on_65.54.167.230./
@400000004043f70a30fc5a14 status: local 0/10 remote 0/255
@400000004043f70a31df6ee4 bounce msg 2117730 qp 23180
@400000004043f70a31df7a9c end msg 2117730
@400000004043f70a31e18224 new msg 2117731
@400000004043f70a31e22a1c info msg 2117731: bytes 1056 from <> qp
23180 uid 107
@400000004043f70a322e561c starting delivery 54: msg 2117731 to remote
jo@desktop.desktop
@400000004043f70a322edaec status: local 0/10 remote 1/255
@400000004043f70b06059294 delivery 54: failure:
Sorry,_I_couldn't_find_any_host_named_desktop.desk top._(#5.1.2)/
@400000004043f70b0605a234 status: local 0/10 remote 0/255
@400000004043f70b0e362d0c bounce msg 2117731 qp 23182
@400000004043f70b0e3638c4 end msg 2117731
@400000004043f70b0e3828dc new msg 2117730
@400000004043f70b0e38c134 info msg 2117730: bytes 1510 from <#@[]> qp
23182 uid 107
@400000004043f70b0e82707c starting delivery 55: msg 2117730 to local
postmaster@desktop
@400000004043f70b0e82f54c status: local 1/10 remote 0/255
@400000004043f70b0f3c42cc new msg 2117732
@400000004043f70b0f3c4e84 info msg 2117732: bytes 1611 from <#@[]> qp
23185 uid 101
@400000004043f70b0f84ec5c starting delivery 56: msg 2117732 to local
nobody@desktop
@400000004043f70b0f84f42c status: local 2/10 remote 0/255
@400000004043f70b0f84f814 delivery 55: success: did_0+1+0/qp_23185/
@400000004043f70b0f84fbfc status: local 1/10 remote 0/255
@400000004043f70b0f84fbfc end msg 2117730
@400000004043f70b0f9ae944 delivery 56: failure:
Sorry,_no_mailbox_here_by_that_name._(#5.1.1)/
@400000004043f70b0f9af4fc status: local 0/10 remote 0/255
@400000004043f70b0f9af4fc triple bounce: discarding bounce/2117732
@400000004043f70b0f9af8e4 end msg 2117732